How fast was the X-43A scramjet?
11,265 km/hAbout 7,000 mph · Orbit
NASA's uncrewed X-43A flew at nearly Mach 9.6 in 2004.
That's about 200 times a red kangaroo's top speed (56 km/h).
🚀11,265 km/h
✈️Yeager's Bell X-1
By speed: the X-43A is about 10× faster than Yeager's Bell X-1.
Things about as fast
- How fast does Phobos orbit Mars?7,700 km/h
- What is the Moon's escape velocity?8,568 km/h
- How fast does Uranus spin at its equator?9,320 km/h
- How fast does Neptune spin at its equator?9,650 km/h
- How fast does a geostationary satellite move?11,070 km/h
- How fast do earthquake S-waves travel?12,600 km/h
- How fast is a GPS satellite?13,900 km/h
- What is Mercury's escape velocity?15,300 km/h
Many real things vary, so we use a typical or official figure. Spotted a mistake? Email [email protected].